Process of producing a catalyst from vanadium pentoxide and the product thereof



umrro STATES HARRY 1o. GIBBS, or Pawns GROVE, NEW JERSEY, nEn'rcAT'nn BYunsnn ASSIGN- Patented-June 1923.

PATENT oFFicE'.

MENU-VS TO THE GOVERNMENT OF THE UNITED STATES AND TO THEPEOPLE Tnnnnor.3

raocnss or raonucmo A cATALYsT rnom VANADIUM PENTOXIDE AND an PRODUCTTHEREOF. v

No Drawing.

Application filed November 28, 1921. Serial No. 518,452.-

I TILED mmna m AcT or MARCHjplSSS, 22 sTAT.'I.., 625.)

v To all whom it may concern:

Be it known that I, HARRY'D." GIBBS, a citizen of the United States ofAmerica, and a resident of Penns Grove, county f Salem,

5 State of New Jersey, have invented a new,

and useful Process of Producing a Catalyst from Vanadium Pentoxide andthe'Product Thereof. r

This application is made under the act of March 3, 1883, Chapter 143 (22Stat, 625) and the invention herein described and claimed may be used'bythe .Governmentof the United States, its oflicers and employees,-

-and ,by any )erson in the United States either in'pub ic or privatework Without payment to me of any royalty thereon. I

hereby dedicate the same to the free use of the Government and thepeople of .the

United States. I

to This invention relates to the production of a catalyst useful inpromoting variousv oxidation reactions and it consists essentially infusing vanadium oxide,' pouring the molten material' into molds where itcools and solidifies, breaking the ccoled material into particlesandscreening the catalyst insuch form that it can readily be used'forthe coating of various surfaces, for i I my hand in the presence of twosubscribing go example,'brick, metal, and other-surfaces. f The usualmethod of preparing vanadlc oxide catalysts consists in employing a$0111- oxide in various acid' solvents and. impregsame through a seriesof screens'to ob-- f sisting of'pure vanadie oxide in particles of.

tion of ammonium va'nadate or ofvanadicn umice and. igniting the sameafterwards, y which process the asbestos and the pumice and other porousmaterial is impregnated for yanadic oxide. Another method con 'sists inmixing ammonium vanadate with pumice, 'infusorial earth, or othermaterial and molding the same either with or without the employment ofsodium or potassium hydroxide, after which the molten'materialis dried,as is set forth in U. S. Patent No.

v I have discovered that a very supei'ior catalyst can be prepared byfusing pure vanadic oxide and While in a molten condition, pouring thesame into molds where it is chilled and solidified into flatplateswhichare easily broken into small pieces. ,60'

In order to separate therefrom pieces of the desired size, theseparticles are put through a series of screens varyingfrom mesh 'down tosmaller'sizes. By this means particles of approximately uniform size canbe obtained and these uniform particles charged into chambers orapparatus used in P producing the catalytic reactions.

' I claim: I

1. In the production of catalyzers from vanadium pentoxide, the steps offusing the same and crushing the product.

2. A catalytic mass comprising fused and resolidified vanadiumpentoxide, in a finely divided state. 76 3. A prhcess ofproducingcatalyzersfrom vanadium pentoxide, comprising the steps offusing the same and crushing the product. In testimony whereof I havehereunto set FRANK N. Snnqons; A

